Protective device



April 30, 1935. L, w COAN 1,999,894

A PROTECTIVE DEVICE Filed lNia-'mh :5, 1954 l 4\ si' F5 3 LEI' F/g 4 Hg.6

INVENTOR. 60. 1M Cod/rz ATTORNEY.

Patented Apr. 30, 1935 UNITED AIf srrrxras oFFlcE 1,999,994 Pno'rECrivE"nnvlcli` l vi/- y Leow. com, supfenceoe'lo; y

Application Much s, 1934, seria-1y ticinese@ L19 (c1. 11s-*99)*` Thisinvention-relates to improvements inxdevices for shielding exposedcurrent carrying bodies such as power lines or the i like; and pertainsY particularly to such a shield device which may be ll readily shiftedto permit yengagement with such In coalA inines, metalminesfquarriesractories l5 to those who must work inthe vicinity oithese lines, and the present invention hasor its primary objecttoprovidea device which may be applied tov such a line tocovfer the uninsulatedportion thereof in Asuch a way that workmen will 20 be protected againstcontact with the line, -but the engagement oi a currenttake-ofifhook orother device with the charged portion of 'the line maybe easily andquickly effected Another objectof the invention isto provide 'aV shieldror protective device of the above described character which may bereadilyjapplied to a current carrying line without having to cut thesame and Without the use of tools:

I `A further object of the invention isy to provide Va, protectivedevice forthe above described purpose which 'will automatically assumeva shielding position with respect to the uninsulated portion of theline'y vto which it isV attachedfafter a.

take-off device has beenconnected with' the line or disconnectedtherefrom.

` A ystill further object of the vinvention is to provide a device oftheabove described characterwhich is so' designed that a take-oil.'` deviceof the conventional hook type may be'readily 40 coupled with theuninsulated portion of the current carrying line without requiringthe'operator to touch the line or protective device with his hands. i'

The inventionwill befbest understood from a I5 consideration of thefollowing'detailed description taken in connectionwith thev accompanyingdrawingforming# part of this speci'ecation, with the understanding,however, that the inveni tion is not conned to any strict conformitywith Vthe showing of the drawing but may bechanged orim'odified so longas such changesior modi- Yflcations mark kno material departure from-the in the appended claims. 1;?"Inv the drawing:-

"been removed.l

v.deep channel 9 formedithroughout the length rtl'iereoffand extendinginwardly from the bot- ;tom'iside Lor face. At the free end of the body2,

t Figure l1 illustrates the device embodying the present invention` yin? longitudinal section, the same being shown'applied to a currentcarrying line from which a portionof theinsulation has l`-liigurefZgisabottom plan view iof the device illustrated inl Figure 1. x i i Figure.,3 isa longitudinal sectional view ofthe device like that shown in Figure1, but showing the`r shiftablewportion ofthe device in the posi- 10 tionto which it isy moved in following one method of coupling a currenttake-01T hook with the line.

4V is ka view in rear end elevation of the device;H i, g

Figure's is a transverseseetional view taken 15 onthe, line 5;-5 ofFigurel. i

'Figure ,6 is alview in front end elevation of the device;

Referring tothe drawing wherein like 'numerals of reference designatecorresponding parts throughoutthe several viewsthe-numeral I indicatestheilxed portion of the protective device, while thenumeral 2 indicatesthe shiftable part thereof. VThe iixed portion I of the device isdivided horizontally to -form the two blocks 3 and l, theconfrontingfaces of which have coactingvchannels 5 which receive the kinsulatedportion of.r the current carrying line 6 to which off hook in thechannel vabout the line 6.

lInterniedlate its ends, ythe channel 9 has the side walls yandtheinneror topwall cut out, as indicatedby the numerals I2 and I3, sothat 50 the width and depth of the.v channel intermediate its endsmaterially increased. The end o1' the body 2y opposite the rounded`inner wall II)is,joined to one of the two blocks .of the Vbody Igbymeans of a spring actuated hinge l ll, which normally urges the body 2to swing into a position of alinement with the body l, as is illustratedin Figure 1.

In addition to forming the free open end of the channel with theinclined side walls Il and the rounded inner wall portion I forfacilitating the application of a current take-oir hook to a desiredportion of the wire, the longitudinal edges oi the walls bordering thechannel 9 are each provided with a notch l between the beveled edge andthe cut out areas l2.

In the use of the present device, the body I is clamped in the mannerillustrated in Figure l, to an insulated wire 6 in such a position thatthe enlarged area of the channel 9 overlies the uninsulated or strippedportion or area i6 of the line. A pole l1 having a metallic hook lIB onits end is ordinarily used for connecting a piece of electricalapparatus with a current carrying line, the hook being engaged over andin contact with the metal part or' the line and thevcurrent being passedtherefrom down to the pole to the desired piece of machinery. When aninsulated line having an uninsulated portion is equipped with aprotective device of the character herein set forth, and it is desiredto couplethe hook I8 of such a take-off pole with thev line to removecurrent therefrom, two methods may be employed for effecting thisconnection, one of which is to engage the hook over the line, asindicated in dotted outline in Figure l, then sliding the hook alonguntil it abuts the/rounded Wall-,surface l0 of the channel so as toeffect the swinging up of the free end of the body 2 so that continuedsliding of the hook on the line will bring itto the uninsulated area I6in the enlarged area of the channel. When this enlarged area of thechannel is reached, the body portion 2 of the device will drop back toposition or will be forced back by the spring of the hinge I4 andthecon'- nection between the hook and the wire will be shielded and at thesame time, the hook will not be in contact with the walls of the channelof the portion 2. Another method of lifting the portion 2 of the deviceis to place the rounded outer portion of the hook in one of the notchesl5, then force the free end of the portion upwardly and by quicklyturning the hook, bring the free end or bill portion over the Wire sothat when the hook is dropped back, it will come into position over thewire and may be slipped in onto the uninsulated area I6 thereof.

From the foregoing, it will be readily apparent that a current carryingline having the uninsulated area shielded by devices of the characterherein described, will be effectively prevented from causing injury toworkmen who might otherwise come accidently into contact with the liveuninsulated portion thereof.

The device herein described may be formed of any suitable material whichwill not conduct electricity, such, for example, as wood, hard rubber,porcelain, or any other insulation material'.

W hat is claimed iszl. A protective device, comprising a two-part bodyadapted to have an insulated current carrying line secured between theparts thereof, an elongated member pivotally attached at one end to saidbody and having a longitudinal channel iorrned therein for the receptionof the current carrier, the said channel being designed to house anuninsulated portion of the carrier, and means facilitating theapplication oi a take-ofi device to the uninsulated portion of thecarrier, comprising a cam-like surface forming a part of a Wall of thechannel at the end remote from the two part body.

2. A protective device, comprising a two-part body adapted to have aninsulated current carrying line secured between the parts thereof, anelongated member pivotally attached at one end to said body and having alongitudinal channel formed therein for the reception of the currentcarrier, the said channel being designed to house an uninsulated portionof the carrier, and means facilitating the application of a take-oddevice to the uninsulated portion of the carrierl comprising a cam-likesurface forming a part of a wall of the channel at the end remote fromthe two part body, said channel intermediate its ends being of increasedWidth and depth whereby a takeoif device engaging the uninsulatedportion of the current carrier will be free from contact with thechannel walls.

3. A protective device, comprising a two-part body adapted to have aninsulated current carrying line secured between the parts thereof, anelongated member pivotally attached at one end to said body and having alongitudinal channel formed therein for the reception of the currentcarrier, the said channel being designed to house an uninsulated portionof the carrier, and means facilitating the application of a take-olfdevice to the uninsulated portion of the carrier, comprising a notchformed in a longitudinal edge of the Wall of the channel in which atake-off device may be engaged to facilitate raising the channeled bodyfor the coupling of the device with the uninsulated portion of thecurrent carrier.

4. Means for shielding an uninsulated portion of a current conductingline, comprising a two part body, means for securing one of said partsto the line adjacent the uninsulated portion thereof whereby the otherpart of the body will overlie said portion and shield the same, andmeans normally urging said other portion of the body into such shieldingposition.

5. In a device of the character described, an

elongated body adapted to lie in longitudinal relation with an insulatedcurrent conductor over a bared or uninsulated portion thereof, meanshingedly securing the body at one end to the insulated portion of theconductor whereby the body and attaching means is wholly supported bythe conductor, and resilient means normally urging the body toward theconductor, the said body being shiftable away from the bared portion tofacilitate application of a take-off conductor therewith.

6. A device adapted to be mounted as a unit upon an insulated currentconductor from which a portion of the insulation has been removed andwholly supported by the conductor, comprising one member adapted to besecured to the insulated portion of the conductor, a shield hingedlysecured to said member and extending therefrom longitudinally of theconductor over the portion from which the insulation is removed, andresilient means constantly urging the shield toward the conductor.

7. A protective device, comprising a two-part body adapted to have aninsulated current carrying line secured between the parts thereof, anelongated member pivotally attached at one end of said body and having alongitudinal channel formed therein for the reception of the currentcarrier, the said channel being designed to house an uninsulated portionof the carrier, and resilient mea-ns carried by the body and normallycurrent carrier in said channel.

8. A device of the character described, com.

secured to, ari insulated current conductor adja-A cent to anuninsulatedportion of the conductor,

' a shielding body joined to the nrst body for movement relative theretoand adapted to cover the uninsulated part of the current conductor,means normally urging the shiftable body into operative positionrelative to Vthe uninsulated portion of the current conductor to shieldsuch portion, and

ymeans whereby the shifting of the shiftable body may be readilyeffected by a current take-off device forthe attachment of the latterwith the uninsulated portion ofthe current conductor.

*10. A protective device of the character described, comprising a bodydesigned to be mounted on, and secured to, an insulated currentconductor adjacent an uninsulated portion thereof, a. shield elementhingedly attached to the body and adapted to encase the uninsulatedportion of the conductor, said shield when swung in one directionuncovering the said portion of the conductor, and means facilitating theshifting of the, shield relative to the conductorto permit a currenttake-orf element to be coupledV with th uninsulated part of theconductor.

LEO W. CQAN. 20v

